Johann takes a random sample of 101010 of his coworkers and asks them each how many hours they worked in the past week. Assume that their hours worked are independent, and let HHH represent the average number of hours worked. Is HHH a binomial variable

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

Which of these angles are complementary? a. 45o and 45o b. 63o and 117o c. 45o and 135o d. 90o and 45o

When a 757 passenger jet begins its descent to the ronald reagan national airport in washington, d.c., it is 3900 feet from the ground. its angle of descent is 6 degrees. how far must the plane fly to reach the run way? a. 37,106 ft b. 37,310.4 ft c. 23,456.6 ft d 2,492.7 ft